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SACRUS

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  1. Yes but the core is based more on the GFS systems
  2. RRFS (Next-Generation Replacement) Core dynamics FV3 (Finite-Volume Cubed-Sphere) Same dynamical core as modern GFS Part of NOAA’s Unified Forecast System (UFS) Grid / algorithm Unstructured cubed-sphere grid Variable resolution No lateral boundary conditions Seamless global → regional scaling
  3. 12z RRFS (new / replace NAM) Snow by 3/4AM Snow through 2PM before mixing with sleet
  4. 1/24 12z NAM Total QPF 12z Total Snow / Sleet (10:1)
  5. HRRR Fwiw does this - just another piece of guidance to explore. Out of the more useful range.
  6. Mixing by 3PM just south of the city with 0.6 fallen as snow at 12:1 ratio 7.5 inches
  7. atest 12z (1/24) HRR has snow between 3AM and 6AM Sunday
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